class AutoBooking:
    def __init__(self):
        self.query = None

    def set_query(self, query):
        self.query = query

    def order_pre_fill(self):
        """自动填充乘客信息/座位偏好"""
        pass

    def millisecond_response(self):
        """检测到余票后300ms内发起请求"""
        pass

    def retry_mechanism(self):
        """订单提交失败后自动重试(最多5次)"""
        pass